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likoan [24]
3 years ago
6

2|m-n2|+k3 (if k=-2,m=-7, and n=4)

Mathematics
1 answer:
Dafna11 [192]3 years ago
5 0

Answer:

correction = 24

Step-by-step explanation:

2|-7-4*2| + -2 *3

2|-7-4*2| + -6

2|-7-8| + -6

2|-15| + -6  

the 15 turn positive because of the |bars|

2x 15 30 - 6

= 24

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Marking brainliest
laiz [17]

Answer:

23.1\%

Step-by-step explanation:

Stefanie's mixture of 18 grams has a 20% sugar content. Therefore, there are  grams of sugar in her syrup.

John's mixture of 30 grams has a 25% sugar content. Therefore, there are  grams of sugar in her syrup.

Therefore, if they mix their syrups together, there will be 11.1 grams of sugar and 48 total grams of content.

The concentration of sugar in the new mixture is \frac{11.1}{48}=\fbox{$23.1\%$}(rounded to one decimal place).

5 0
2 years ago
HELP. ASAP. EASY MUTIPLE CHOICE QUESTIONS.<br>​
Alina [70]

Answer:

C 44.59

Step-by-step explanation:

The first two shirts are full price

2*49.96 = 99.92

The third shirt is 50% off.  That means it is 50% of the original price

.5*49.96 = 24.98

The total cost before tax is

99.92+24.98 =124.90

tax = cost * tax rate

tax = 124.90*.071

tax=8.87

Add this to the cost

final cost = 124.90+8.87

                =133.77

We want to find the mean cost (average cost)

Take the total cost and divide by the number of shirts

133.77/3 =44.59

5 0
3 years ago
Read 2 more answers
What is the equation of the line in slope-intercept form?
GREYUIT [131]
Y=5/2x+5 because the slope is 5/2 and the y-intercept is 5
6 0
3 years ago
Please help asap, will mark brainlest. Thanks
mixer [17]

Answer:

2.

4x^2 + 4 - 5x + x - 2x^2 + 8

= (4x^2 - 2x^2) + (x - 5x) + (4 + 8)

= 2x^2 - 4x + 12

=> D is correct

3.

2x^2 + 6x - 7x + 8 - 3x^2 + 1

= (2x^2 - 3x^2) + (6x - 7x) + (1 + 8)

= -x^2 - x + 9

=> C is correct

4.

B is correct (4 and 3)

Hope this helps!

:)

3 0
3 years ago
HELP ME PLEASE (no links)
slega [8]

Answer:

y = 1.5x

Step-by-step explanation:

We are to find the equation of the straight line

Using the coordinate (0, 0) and (200, 300)

Slope m = 300-0/200-0

m = 300/200

m = 1.5

Since the line pass through the origin, the y intercept is 0

Substitute m = 1.5 and b =0 into y = mx+b

y = 1.5x + 0

y = 1.5x

This gives the required equation

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2 years ago
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